Run results for: Selective sorting with splice() & unshift() vs sort()

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/116.0

Browser: Firefox 116

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
splice() & unshift()	25.2 Ops/sec
sort()	933.8 Ops/sec

Script Preparation code:

var sample = [...Array(10000)].map((_,i) => i)

Tests:

splice() & unshift()
let arr = [...sample] arr.forEach((item, i) => { if(item % 3 == 0){ arr.splice(i, 1) arr.unshift(item) } })
sort()
let arr = [...sample] arr.sort((i) => (i % 3 == 0) ? -1 : 0)